diamond

because its a shared pc and my friends n cousins also use it. i dont know what do they do n watch on it so i need to secure it for own safety as i use it for my banking n shopping etc.. please suggest me a trustworthy free keylogger on internet and also how to use it? is it something effective like saving passwords or logs? i have heard it cant b detected by anyother user of the pc. is that true? and how can i remove it if i ever want to? is it easy to uninstall it?

p.s: i use windows 7 and explorer 8 with all new versions of hotmail n yahoo messengers and other softwares.

waiting.
thanks!